no. 2
Measure Theoretic Zero Sets in Infinite Dimensional Spaces and Applications to Differentiability of Lip-Schitz Mappings
Publications du Département de mathématiques (Lyon), Tome 10 (1973) no. 2, pp. 29-39. 
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     author = {Christensen, Jens Peter Reus},
     title = {Measure {Theoretic} {Zero} {Sets} in {Infinite} {Dimensional} {Spaces} and {Applications} to {Differentiability} of {Lip-Schitz} {Mappings}},
     journal = {Publications du D\'epartement de math\'ematiques (Lyon)},
     pages = {29--39},
     publisher = {Universit\'e Claude Bernard - Lyon 1},
     volume = {10},
     number = {2},
     year = {1973},
     mrnumber = {361770},
     zbl = {0302.43001},
     language = {en},
     url = {http://archive.numdam.org/item/PDML_1973__10_2_29_0/}
}
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Christensen, Jens Peter Reus. Measure Theoretic Zero Sets in Infinite Dimensional Spaces and Applications to Differentiability of Lip-Schitz Mappings. Publications du Département de mathématiques (Lyon), Tome 10 (1973) no. 2, pp. 29-39. http://archive.numdam.org/item/PDML_1973__10_2_29_0/

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